<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    /* div {
      color: red;
    } */
  </style>

</head>

<body>

  <div>我是div</div>
  <div>我是div</div>
  <p>我是段落</p>
  <ul>
    <li>我是ul里面的小li哦</li>
  </ul>

  <ol>
    <li>我是ol里面小li哦</li>
  </ol>

</body>

</html>